Vise



M. S- CUMNER.

VISE.

APPLICATION FILED JULY 21. ms.

Patented May 3L 11921.

2 SHEETSSHEET l.

M. S. CUMNER.

VISE. 4

APPLICATION man JULY 21. 1919.

1,379,747, Patented May 33L 11.921

2 SHEETS-SHEET 2.

UNITED STATES IHLA'JITEIMT S- CUMNER, OF NEW YORK, N. Y.

VIQE.

Application filed July 21, 1919. Serial No. 312,406.

To all whom it may concern:

Be it known that I, MATTHEW S. CUMnER, a citizen of the United States ofAmerica, and resident of the city, county, and State of New York, haveinvented certain new and useful Improvements in V1ses, of whlch thefollowing is a specification, reference being had to the accompanyingdrawlngs, forming a part thereof.

My present invention relates partlcularly to vises of the rotatablyadjustable type.

The objects of the invention are to provide asimple, practical, durableand lnexpenslve vise of this character and partlcularly to protect therelatively rotatable parts from becoming jammed with metal cuttings,filin s, etc.

IBriefly stated the invention comprises a clamp structure and a base onwhich the clamp is rotatably adjustable, sald clamp being connected tothe base by a bolt or bolts having head portions worklng in an undercutcircular slot and which slot 1s protected against the ingress of metalchips and the like by a relatively rotatable closure plate overlying theslot and through which the bolts are passed.

Other features of the invention relate to the method of assemblage ofthe parts and to an improved structure of the clamp.

The accompanying drawings illustrate the invention embodied in twodifferent practical forms, and it will be understood that the structuremay be otherwise modified in form without departure from the true spiritand scope of the invention.

In said drawings:

Figure 1 is a plan view of the first form of the invention.

Fig. 2 is a side elevation thereof.

Fig. 3 is a longitudinal sectional view taken on substantially the planeof line 33 of Fig. 1.

Fig. 4 is a transverse sectional vlew substantially on the plane of line44 of Fig. 1.

Fig. 5 is a plan view of the second of the invention.

Fig. 6 is a longitudinal sectional view of this latter form.

The base 7 of the device is shown as of general circular form andconstructed for instance, so that it may be readily clamped on a bed 8of a planer or other machine tool, as indicated in Fig. 2. A

9 designates the clamp structure which,

form

in the first form disclosed is of an improved fixed jaw 11, andsupporting a movable I aw 12, which is actuated by a screw 13 throughthe medium of a connecting block 14 which is loosely seated in themovable aw and has a dependent portion 15 slidably guided in the slot 16in the clamp base 10.

One of the relatively rotatable parts of the device is constructed withan undercut clrcular slot to receive the bolts which secure the twoparts together. In the present dlsclosure this undercut circular slot isformed in the supporting base 7, as indicated at 17 and the parts arerotatably engaged by a circular upstanding boss 18 on the base engagingin a corresponding socket 19 in the underside of the clamp base. Theclamp base is shown as rotatably confined to the supporting base bybolts having head portlons 20, working in the widened undercut portionof the slot and shank portions 21 extending up through the reduced mouthportion of the slot and through the base 10 of the clamp, said boltshaving nuts 22 engaged at their upper ends for securing the clamp to thebase and for holding it in its relatively adjusted position. Theundercut slot which usually is in the form of a complete circle is shownas closed at the bottom (see Figs. 3 and 4) to prevent the bolts frombecoming dislodged when the nuts 22 are removed. Access to this slot isprovided for the bolts by an entrance way shown at 23 in Fig. 4,extending from the bottom of the base up into the widened undercutportion of the slot, said entranceway being at least the width of thebolt head so as to admit the same into the undercut passage providedtherefor.

The undercut slot is protected against the entrance of metal cuttingsand other objectionable matter by a closure plate shown in the form of aring or annulus 24 rotatably seated in a trackway 25 provided at themouth of the circular slot. This ring is formed with suitable aperturesat diametrically opposite points for the passage of the shanks 21 of thesecuring bolts, as indicated at 26 in Fig. 4.

From this it will be clear that the annular plate 24 efiectually closesthe undercut slot and prevents any foreign matter falling down into saidslot where it would interfere with the freeadjustment of the parts. a

In Figs. 5 and 6 I have shown the invena single longitudinal slot 27therein and the movable jaw element 12 similarly is provided with only asingle slot 28 in line with the slot in the base. Also a single link 29forms the connecting medium between the base and movable jaw, said linkbeing disposed in the registering slots in the jaw and base and having apin 30 at its lower end for engagement with the stops 31 on theunderside of the base and having a widened head 32 at its upper endsliding on the rearwardly extending shoulders 33 provided on the jaw onthe opposite sides of the slot therein. The jaw closing screw 34 isengaged in this head at a point substantially in line with the body ofthe link 29 and the thrust is thereby centralized and twisting strainsare obviated.

Another advantage arising from this construction is that the jaw is notweakened to such an extent as when a plurality of slots are formedtherein, as in my prior patent.

In addition to forming a closure for the circular confining slot, theclosure plate also forms a guide for positioning the securing boltsduring the assemblage of the parts. This closure plate also, to acertain extent, assists in guiding and aiding the free swivelin of theparts.

at I claim is:

1. A rotatably adjustable vise comprising a base provided with anundercut circular slot, a closure for said slot rotatably adjustable onthe base, a clamp rotatably mounted on the base over said rotatableclosure, and bolts confining said clamp to the base having head portionsworking in the undercut slot, said rotatable slot closure havingopenings for the passage of said bolts therethrou h.

2. rotatably adjustable vise comprising a base provided with an undercutcircular slot, a clamp rotatably adjustable on said base above saidslot, a closure for said slot interposed between the base and clamp androtatably adjustable with said clamp, a bolt for rotatably confining theclamp to the base having a headed portion working in the undercut slot,and a shank portion projecting up through the closure and made fast tothe clamp.

.3. In a rotatably adjustable vise, a base provided with an undercutcircular slot, an annular closure plate seated over said slot androtatably adjustable on the base, a rotatably adjustable clamp mountedon the base, and a confining bolt having a head working in the undercutslot and a Shank portion extending up through the annular closure andsecured to the clamp.

41. In a rotatably adjustable vise, the combination of relativelyrotatable base and clamp members, one of said members having an undercutcircular slot, a confining bolt having a head portion working in saidundercut slot, and a shank portion made fast to the other of saidmembers, and a rotatable plate interposed between the two members andclosing the circular slot in the one member, said rotatable closureplate having an opening through which the confining bolt extends.

5. In a rotatably adjustable vise, relatively rotatable clamp and basemembers, one of said members having an undercut circular slot thereinclosed at the bottom except for an opening which is the full width ofthe undercut portion of the slot, a confining bolt having a head workingin the undercut portion of the slot and engageable in said slot throughthe opening aforesaid, said bolt having a shank portion extending upthrough the slot and made fast to the other member of the vise, and arelatively rotatable closure plate seated over the slot and providedwith an opening therethrl'ou'gh for the passage of the shank of the b0 t6. A rotatably adjustable vise comprising a base provided with anundercut circular slot, and an annular trackway above said slot,anannular plate seated on said track- -way and closing the entrance tothe slot, a

clamp rotatably mounted on the base, and securing bolts having headportions confined in the undercut portion of the slot, and shanksextending up through the closure plate and made fast to the clamp.

7. A rotatably adjustable vise comprising a base having an undercutcircular slot in the top thereof and an entrance-way opening from thebottom of the base into the undercut portion of the slot, an annularclosure plate rotatably seated over the slot, a

clamp rotatably mounted on the. base, and

confining bolts having head portions entered in the undercut portion ofthe slot through the entrance-way in the bottom of the base, and shankportions extending up through the rotatable annular closure plate andsecured to the clamp.

In witness whereof, I hereunto set my hand this 18th da of July 1919.

MA HEW S. CUMNER.

